<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	private $_id;
	public $username;
	public function authenticate()
	{
	 $record=User::model()->findByAttributes(array('username'=>$this->username));
			   if($record===null)
				   $this->errorCode=self::ERROR_USERNAME_INVALID;
			   else if($record->password!==md5(md5($this->password)))
				   $this->errorCode=self::ERROR_PASSWORD_INVALID;
			   else
			   {
				   $this->_id=$record->user_id;
				   $this->setState('user_id', $record->user_id);
				   $this->username=$record->username;
				   $this->setState('username', $record->username);
				   $this->errorCode=self::ERROR_NONE;
			   }
			   return !$this->errorCode;

	}
	public function getId()
	  {
		  return $this->_id;
	  }
	  
	public function userName ()
	{
		return $this->username;
	}
}
